[EricH]

My '03 crew shirt says there were 23 regionals that year.

As follows:
Week 1: BAE Granite State, Buckeye, NASA/VCU, Sacramento (rookie--in Sac), St. Louis
Week 2: Arizona (rookie), Chesapeake, Pittsburgh, UTC New England (now CT Regional)
Week 3: UCF, GLR, NYC, SBPLI Long Island
Week 4: Canada, Midwest, Peachtree, Philly, SVR
Week 5: J&J Mid-Atlantic (not sure what this one is now), LSR, PNW, SoCal (L.A.), WMR
Week 6: Championship, Houston, TX